Announcement

Collapse
No announcement yet.

When I restart my computer, I get a pre-boot screen that I cannot remove.

Collapse
This topic is closed.
X
X
Collapse
 
  • Page of 1
  • Filter
  • Time
  • Show
Clear All
new posts
Previous template Next
    #1

    When I restart my computer, I get a pre-boot screen that I cannot remove.

    When I boot or restart my computer, the following appears:

    "The system found unauthorized changes on the firmware/operating system or UEFI drivers.

    Press [N] to run the next boot device/or enter directly to BIOS Setup if there are no other boot devices installed.
    Go to BIOS Setup > Advanced > Boot and change the current boot device into other secured boot devices."

    The actual image is black background with white font. After selecting the capital [N], the boot screen appears. When I select my chosen Operating System, everything seems to work normally.

    How do I remove the unwanted screen?
    Attached Files
    Last edited by Shabakthanai; Oct 18, 2015, 09:57 AM.
    Tags: None
    • Top
    • Bottom
    #2
    Do you have secure boot enabled? I believe that is what secure boot in UEFI is supposed to protect the computer from unauthorised changing of UEFI set up to prevent malicious software from entering the system. But Microsoft uses it to prevent other OS's from booting up the machine.

    If secure boot is enabled try to disable it.
    • Top
    • Bottom

    Comment

      #3
      Hi Nick, nice to see your welcome face again. Both my computers have been ailing for a long time now, so getting them back is a happy day for me.

      My BIOS is set for secure boot, but the options are only "Windows" or an "alternate OS". When I selected the alternate OS setting and restarted the computer, the unwanted screen did not return, however a strange screen did appear that did not offer the normal boot options for my dual-boot system.

      It offered 32 and 64 bit from ram, 32 and 64 bit standard, but my pathetic memory cannot remember the other option, and none of the options were for Kubuntu 14.10 or 15.04, which are the operating systems in my computer. Attempts to use any of those options created kernel panic and an attempt to open that froze, so I went back to the BIOS and selected the Windows option for secure boot. When I then tried to start the computer, I got the unwanted screen again.

      It looks like you are correct in the area of the problem, but there was not an entry for turning the Secure Boot option OFF.

      Unless someone else has a suggestion, I guess I'll just have to live with it.

      I am so happy having my computers working again, I can easily stand the inconvenience.

      Great to see you again, my friend. I hope all is well with you and yours.

      Shab

      Originally posted by NickStone View Post
      Do you have secure boot enabled? I believe that is what secure boot in UEFI is supposed to protect the computer from unauthorised changing of UEFI set up to prevent malicious software from entering the system. But Microsoft uses it to prevent other OS's from booting up the machine.

      If secure boot is enabled try to disable it.
      • Top
      • Bottom

      Comment

        #4
        What version of Windows do you have?
        Kubuntu 14.04 / KDE 4.13.3 / GRUB Version: 0.97-29ubuntu66
        HP15 -        -f033wm Laptop / CPU: Intel / GPU: Intel Corporation Atom Processor / RAM: 8GB / Hard Drive: 1 each / Seagate / Optical Drive: HP DVDRW GUB0N / Windows 10

        • Top
        • Bottom

        Comment

          #5
          I only have Kubuntu 15.04 and 14.10. I no longer want or use Windows.

          Originally posted by logan01 View Post
          What version of Windows do you have?
          • Top
          • Bottom

          Comment

            #6
            Originally posted by Shabakthanai View Post
            I only have Kubuntu 15.04 and 14.10. I no longer want or use Windows.
            Oh ok. Didn't realize other OSs had the secure boot feature.
            Kubuntu 14.04 / KDE 4.13.3 / GRUB Version: 0.97-29ubuntu66
            HP15 -            -f033wm Laptop / CPU: Intel / GPU: Intel Corporation Atom Processor / RAM: 8GB / Hard Drive: 1 each / Seagate / Optical Drive: HP DVDRW GUB0N / Windows 10

            • Top
            • Bottom

            Comment

              #7
              As recommended in Post #2, turn off secure boot. Can't hurt anything at all (besides, you can always turn it back on, but ... it seems to cause more problems than it solves).

              My BIOS [you mean your UEFI firmware] is set for secure boot, but the options are only "Windows" or an "alternate OS".
              Chose Alternate OS. (That's what some makers consider to be "Secure Boot OFF"!)
              An intellectual says a simple thing in a hard way. An artist says a hard thing in a simple way. Charles Bukowski
              • Top
              • Bottom

              Comment

                #8
                Yes that message each boot is intended to be a notification... it is secure boot doing its job.
                Just in case there is some off chance you did not install another OS yourself (?) lol
                Kubuntu 18.04 on AMD
                • Top
                • Bottom

                Comment

                  #9
                  When I did that, upon restart, a different starting screen showed up. There wasn't a choice between my 2 installed OS's, there were only options like: 32bit or 64bit from RAM or 32bit or 64bit normal, none of these options would open either OS. Additionally, there was no option to disable, just the two choices mentioned. No option to SHUT OFF secure boot. Thanks for trying, but that is not the solution, at least in my case.

                  Originally posted by Qqmike View Post
                  As recommended in Post #2, turn off secure boot. Can't hurt anything at all (besides, you can always turn it back on, but ... it seems to cause more problems than it solves).


                  Chose Alternate OS. (That's what some makers consider to be "Secure Boot OFF"!)
                  • Top
                  • Bottom

                  Comment

                    #10
                    What computer do you have, make and model name?
                    • Top
                    • Bottom

                    Comment

                      #11
                      Because I have been having so many problems, it has been hard to reply to posts recently. My desktop PC was unable to be restarted for several days and did not allow liveCD's, either PartedMagic or Kubuntu liveCD to boot or the in-system repair either.

                      Once in a while when I start up my system it will boot to a working Operating System for a while. That just happened, but it was K15.04. My computer recommended upgrading to 15.10. I thought perhaps there may be additional repairs included in the upgrade, so I upgraded. It is working again, at least for a while.

                      I did not buy a brand name computer, Nick. I built mine from scratch. Here is a list of the components that make up my desktop computer.

                      Processor: AMD 8-core @ 4Ghz
                      Memory: GSkill 32GB of DDR3 @ 1866 4@8GB matching sticks
                      SSD: 128GB
                      SSD: 256GB
                      Video Card: XFX 2GB DDR5
                      Motherboard: Sabertooth 990FX R2.0
                      TB HDD @ 6GB/s
                      TB HDD @ 3GB/s
                      DVDrom SATA

                      I can't remember the date I built the computer, but it has been a few years now. Originally I had 16GB GSkill memory and upgraded a few months ago to matching 32GB.

                      My monitors are 27" ViewSonic and 24" ASUS both @ 1980 x 1020.

                      When Kubuntu 15?? is running, it is my preference for an OS. I don't mind the bugginess, just so long as I am sure it is a programming bug and not a mechanical failure. I enjoy and learn from the repair process. Not for any need, but I love speed of operation and seek that to the limits of my purchasing ability.

                      My system using the K15.10 OS seems the fastest and best, when it is working. I also like the cosmetic appearance.

                      Additionally, I have noticed that when K15.10 is working properly, sound and video quality are better than in the K14 OS's.

                      Thanks for the input, my friend.
                      ight now
                      I have been running my computer non-stop for a couple of days now successfully, so perhaps I do not have a hardware problem.

                      Originally posted by NickStone View Post
                      What computer do you have, make and model name?
                      • Top
                      • Bottom

                      Comment

                      Previous template Next
                      Working...
                      X